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https://issues.apache.org/jira/browse/HADOOP-15302?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16394148#comment-16394148
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Elek, Marton commented on HADOOP-15302:
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Fixed licence/checkstyle warnings in v2.
> Enable DataNode/NameNode service plugins with Service Provider interface
> ------------------------------------------------------------------------
>
> Key: HADOOP-15302
> URL: https://issues.apache.org/jira/browse/HADOOP-15302
> Project: Hadoop Common
> Issue Type: Improvement
> Reporter: Elek, Marton
> Assignee: Elek, Marton
> Priority: Major
> Attachments: HADOOP-15302.001.patch, HADOOP-15302.002.patch
>
>
> HADOOP-5257 introduced ServicePlugin capabilities for NameNode/DataNode. As
> of now they could be activated by configuration values.
> I propose to activate plugins with Service Provider Interface. In case of a
> special service file is added a jar it would be enough to add the plugin to
> the classpath. It would help to add optional components to NameNode/DataNode
> with settings the classpath.
> This is the same api which could be used in java 9 to consume defined
> services.
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